Re: Allocation question

[Georg Bauhaus <rm.dash-bauhaus@futureapps.de>]

Philipp Riegger schrieb:
> On Mon, 11 May 2009 12:23:11 +0200
> Olivier Scalbert <olivier.scalbert@algosyn.com> wrote:
> 
>>      type Color_T is record
>>          Red:   Integer;
>>          Green: Integer;
>>          Blue:  Integer;
>>      end record;
> 
> You can force a Size of 2 bit for this type by "for Color_T'Size use
> 2;".


How would this work? In fact,

==============Error messages for source file: image.ads

     9.     for Color_T'Size use 2;
                                 |
        >>> size for "Color_T" too small, minimum allowed is 96

    11.     type Image_T is array(Positive range <>, Positive range <>)
of Color_T;
                 |
        >>> component size for "Image_T" too small, minimum allowed is 96


But I'd add a type for the range of permissible values per color.
If each value is in range 0 .. 255, then three of them will need
24 bits and the components of an array can be packed.